Glass-blowing machine



(No Model.)

Patented Sept. l3, I898. H. C. SCHRADER.

GLASS BLOWING MACHINE.

(Applicationfiled Feb. 21, 1898.)

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Patented Sept. I3, I898.

H. C. SCHRADER.

GLASS BLOWING MACHINE.

(Application filed Feb. 21, 1898.)

3 sheets sheet 2.

(No Model.)

Swvamtoz 272, 39. 558ml:

Patented Sept. I3, I898.

H. C. SCHRADER. GLASS BLOWING MACHINE.

(Application filed Feb. 21, 1898.)

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m: NORRIS FEYERS co, Pnonmumrz, WASHINGTON, a, c.

' E FFTC I-IENRY C. SOHRADER, OF MOUNT PLEASANT, PENNSYLVANIA.

GLASS-BLOWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 610,589, datedSeptember 13, 1898.

Application filed February 21, 1898. Serial No. 671,127. (No model.)

To all whom, it may concern:

Be it known that I, HENRY C. SCHRADER, a citizen of the United States,residing at Mount Pleasant, in the county of XVestmoreland, State ofPennsylvania, have invented certain new and useful'lmprovements inGlass-Blowing Machines, of which the followingis a specification,reference being had therein to the accompanying drawings.

This invention relates to glass-blowing machines, and more particularlyto a machine for automatically operating molds in connectionwithblow-irons.

The invention consists in an improved means for successively operatingthe several molds of a series, so that when one mold is accomplishing apredetermined function the adjacent molds are at diiferent stages of theoperation, whereby a single operator can supply the blow-irons to theblowing-machine.

The invention also consists in novel means for raising and lowering themolds and opening and closing the same, and, further, in the operationof the connection with the air-pipe to the blow-iron.

Other objects and advantages of the invention will hereinafter appear inthe following description, and the novel features thereof will beparticularly pointed out in the appended claims.

In the drawings, Figure l is a front elevation with parts in section.Fig. 2 is a plan view of the molds and operating mechanism with theupper portions of the apparatus omitted. Fig. 3 is a detail sideelevation of one of the molds and the cam-operating mechanism therefor.Fig. 4 is a vertical cross-section through the machine,showingacontroller for the air-pressure. Fig. 5 is a detail verticalcross-section through one of the molds with the parts separated. Fig. 6is a detail plan of the device for supporting and rotating theblow-irons. Fig. 7 is a detail perspective of the operating-cam for themolds, and Fig. 8 is a detail side elevation of the connections foroperating the air-pipe connection. 7

Like letters and numerals of reference indicate like parts throughoutthe several figures of the drawings. Y

The letter A designates a tank or receptas cle adapted to contain a bodyof water within which the mold may be submerged to cool the same. Atopposite ends of the tank there are located vertical standards A,connected together at their upper ends by a cross-piece A. Thesestandards A are adapted to receive and support the journals for theseveral operating parts.

Upon the support B,mounted in the standards A, there are located aseries of molds 0, all of Which are of similar construction, andtherefore only one of the same will be described in detail. The mold iscomposed of two members 0, pivoted together by means of a pin C passingthrough a projection D, formed upon one end of a supporting-1ever D, theopposite end D of which is enlarged and suitably shaped to permit theoperation of the mold, ashereinafter described. In order that the partsof the mold may be separated when found desirable for the removal of theblown ware, they are connected to the pivoted members C by means ofbolts G which pass through a flange formed upon the upper or collarportion of the mold and a similar flange upon the body portion 0Thislatter portion is provided with a suitable groove 0 adapted toreceive a flange 0 upon the lower portion of the pivoted member 0, andthus hold the parts of the mold against any displacement when the partsare connected together. The portions 0 have rearwardlyextending arms 0which are adapted to be acted upon by a cam, as hereinafter described.The bottom of the mold is composed of a socket 0 supported upon verticalstandards 0 which are adj ustably mounted in suitable re cesses in theportion D of the supporting-lever D, so that the same can be adjusted initsrelation to the other parts of the mold. If desired, a'die-block C ofany preferred configuration may be seated in the socket C, so as toproduce upon the base of the article molded the desired configuration.The vertical adjustment of the standard 0 may be effected by nuts 0which can be arranged above and below the socket in the lever D, saidlever being journaled upon the support B by means of an open bearing Dto permit the removal of the lever from the support whendesired.

Slightly above and at the rear of the support B a driving-shaft B islocated, which carries a series of operating-cams E, corre sponding innumber tothe molds carried by the support B and so located upon theshaft as to act successively upon the series of molds. By thisarrangement a single operator can at tend to a series of molds, as onlyone mold of the series Will be opened for the removal of the blown wareat a time, and subsequently the next successive mold will be broughtinto position for the reception of the molten glass upon the blow-iron.This cam E is shown in detail in Fig. 7 and is provided with a flange E,extending substantially one-third of the circumference of the same. Thisflange merges into a reduced port-ion E, which is of the width of thebody of the cam and extends for substantially a third of itscircumference, while the remaining third is cut away to form a recess EAt a point where the portion E terminates a hooked end E is provided,which in the rotation of the cam is adapted to en'- gage the projectionD of the supporting-le ver D. The cam is supported upon the shaft bymeans of a bearing-collar E", by which means it may be adjusted to thedesired position and then firmly secured against rotatiou.

When the mold is submerged into the water,- the parts liein the positionshown in Fig. 3 and at the left of Fig. 2. In the rotation of the camthe hooked end E engages a projection D upon the supporting-leverD, soas to swing this lever upon its support B, and thus raise'the mold intoa vertical position, the mold at this time being held in an openposition by means of the spring 0,, extending to the opposite sides ofthe pivots of the mold section. During this interval the blow-iron maybe placed above the mold, and the continued rotation of the cam bringsthe flange E thereof between the rearwardly extending arms C of themold-sections, forcing these arms in opposite directions, so as to closethe molds against the tension of the spring. The moldis thus held closedby the contact with the flange E of the cam and is prevented fromswinging downward by the contact of the projection D with the face ofthe cam; When the molding operation is completed, the recessed portion Eof the cam comes into alinement with the projecting portion of thelever, so that said portion of the lever-will drop into the recess andpermit the depression of the mold into the water to cool the mold.Before this depression is completed and at the initial stage thereof themold is opened by the spring a, and the blow-iron may be removedtherefrom. One member of the extended arms C of the mold-sections hasbeen provided with a yielding contact point for engagement with theflange E of. the cam E. This is not regarded as an es sential element;but should any clogging or other reason cause the mold to stick or catchthe yielding projection F would give and prevent any injury of the partscaused by the flange E coming into contact therewith. This projection Fis provided with a guide-pin F,

seated in a threaded block F and surrounded by a coil-spring F Theexpansion of this spring is limited by means of a stop F At the upperportion of the supports A and adjacent to the cross-piece A I locate thewind-pipe G,which will be connected with any suitable device forsecuring a desired pressure of air within the same to perform theblowing operation. Above the cross-piece is located a series of caps G,having therein a suitable passage G which passage is connected by aflexible connection G with the air-pipe G. The vertical reciprocation ofthis head is guided by a downwardly-projecting pin Gfloperating in arecess formed in crosspiece A For the purpose of regulating the amountof air escaping from this cap G, I provide a valve G of any suitableconstruction, as shown in Fig. 4:. This cap G is adapted to beautomatically raised and lowered in its relation to the blowpi'pe whenthe same is removed and replaced in the machine. For this purpose adownwardly-extending arm G is provided, having thereon an adjustablecollar G Upon the shaft B, between the cams E, are located a series ofsegmental cams H, having a face H describin g the arc of a circle and aface H describing a diameter of a circle. This cam H operates upon ashifting lever I, one arm I of which extends adjacent to the-journal Bofthe cam, and the opposite arm 1 extends toward the front of the machineand is provided with a suitable recess to receive the lower end of theshifting rod G the upper member of which rod is provided with a sleeveg, which surrounds and lies upon the part G extending downward from thecap G. The lower end of the shifting rod- G is provided with a lug orstop g to limit the downward movement thereof through the arml This armis journaled upon the support B by means of an open bearing-box I Itwill be obvious that when the circular portion of this segmental cambears upon the arm I of the shifting lever the outer arm I thereof willbe elevated and the cap G raised from contact with the blow-iron throughthe medium of the connections G and G". This occurs when the iron is tobe removed from or placed in position above the mold, as shown at theopposite sides of Fig. 1. By adjusting the collar G upon the portion Gthe limit of throw or movement given the cap G can be regulated.

The driving-shaft B, which carries and rotates the cams E and H, may bedriven by any suitable mechanism. For instance, a powershaft J may beprovided with a worm-gear J, which will mesh with a gear-wheel J carriedupon one end of the shaft B. At the outer end of the shaft J suitablefast and loose pulleys J 3 and J respectively, may be provided, andtheshaft J is supported by brackets J at its opposite end portions.

A series of three blow-irons have been illustrated, numbered,respectively- 1, 2, and 3, although it is obvious thatany desired numhermay be used. These irons when placed above the moldsare adapted to berotated during the blowing operation, as is customary in this class ofmachines. This rotation is efiected by means of oppositely-locatedfriction-rollers K, which are mounted upon a cross-piece A of theframework of the machine by means of journals K. The frictionrollers maybe of any desired material; but I have found the use of rubber to bevery desirable for this purpose, as it prevents friction when in contactwith the metallic blowirons. rollers K, are located opposite gear-wheelsK meshing with a worm gear K carried upon the driving-shaft B journaledat opposite ends in the standards A. This shaft is provided with aband-pulley J at its outer end and is driven by means of a belt Jextending from a suitable band-wheel J secured upon the maindriving-shaft A. By the gearing just described the oppositefriction-wheels will be driven in the same direction and the blowpipe 1thus held between the same and rotated or spun upon its axis during theblowing operation. For the purpose of guiding the operator in thelocation of the blowpipe at the center of the molds a series ofguide-lugs A have been provided upon a cross-bar A carried upon theframe, and by placing the blowpipe between these lugs the same will becentered above the mold and between the driving-rollers K.

It is believed the foregoing description will make clear the operationof the machine; but for the purpose of explaining the same fully it maybe stated that when the parts are in the position shown in Fig. 1 anoperator will place a charged blow-iron above the open mold when thesame has risen to a vertical position. The mold is then closed by theaction of the flange E upon the cam E, as heretofore described, and thecap from the airpipe lowered upon the top of the blow-iron by reason ofthe flattened surface H of the cam 11 coming into contact with the arm Iof the shifting lever I. At this time the rotating device will beoperating upon the blowiron to rbtate the same, and the parts will be inthe relation illustrated at the blow-iron.

numbered 1 in Fig. 1. This operation continues as illustrated at theblow-iron numbered 2, the cam E in the meanwhile having rotated acertain. distance forward. hen this cam reaches the recessed portion Ethe 1n old will open, and simultaneously therewith the cap from theair-pipe will be raised by means of the cam H, and the operator willremove the blowpipe and blown object from the mold. Subsequently to theopening of the mold by the spring a,'as before described, the moldbegins its downward swing or movement into the water-tank for thepurpose of cooling the same and .assumes the position shown at the leftof Fig. 1, where the blowpipe has been removed. The blow-irons are Uponthe shaft K, below the frictioneach provided with a suitable collar atthe upper portion to limit the downward movement thereof in relation tothe mold. It Will be obvious that a single operator can replace theblowpipes when it is necessary in a machine embodying a number of molds,and thus effect a great economy in the operation of glass-molding with astructure simple in construction and operation, the parts of which areso positively located to each other that the several operations of themolds are automatically performed by a unitary device without danger ofderangement of the parts or injury to the article operated upon.

The means so far described for supplying air to the blow-ironscontemplate a continuous supply, the pressure being such that the escapefrom the cap when disconnected from the iron is not of materialimportance. It is, however, desirable in this art to increase theair-press ure upon the blow-iron after the ini tial blowis accomplishedin order to produce the fully-blown article within the mold. The glassat the beginning of the blowing operation is so soft in character that aheavy airpressure will produce a streaked and imperfect article. For thepurpose of automatically controlling the air-pressure supplied to theblow-iron I introduce between the flexilole pipe G and the mainGapressure-reducing valve M, the stem of which is provided at its lowerend with a plate M which constitutes a Weight and also a surface forengagement with a valve-lifting device. This pressure-reducing valve isconstructed so as to suitably reduce the pressure of air for the initialstep in the blowing operation. When it is desired to increase thepressure to complete the blown article, the valve is lifted from itsseat by means of a striker N, provided with a plate N at its upper endand a striker-plate N at its lower end. The rod N is suitably guided bysupports N located upon the standards A, and the opening of the valve iseffected by a movement of the striker-rod N, produced by a cam O,suitably located upon the driving-shaft'B to properly time theoperation. When the pressure-reducing valve is opened by thestriker-rod,- the full pressure of air is permitted to pass to theblow-iron, and thus the complete blowing operation performed. Thestructure of parts just described has been illustrated in Fig. 4., butfor the sake of clearness is omitted from Figs. 1 and 2.

It is obvious. that numerous changes may be made in the details ofconstruction of the several parts without departing from the spirit ofthis invention as defined by the appended claims.

Having described my invention, what I claim is 1. In a glass-blowingmachine, the combination with a tank, of a pivotally-supported sectionalmold, unitary rotary device engaging the mold-support for swinging saidmold upon its pivot and for closing the parts of said mold by engagementtherewith, means for automatically adjusting an air-pipe connection inrelation to a blow-iron, and means for rotating said blow-ironsubstantially as specified.

2. In a glass-blowing machine, the combination With a tank, of apivotally-supported sectional mold, a unitary rotating cam adapted toengage and raise the support for the mold and to close the members ofthe mold by engagement therewith, means for automatically adjusting anair-pipe connection in relation to a blow-iron, and means for rotatingsaid blow-iron; substantially as specified.

3. In a glass-blowing machine, the combination with a pivotally-mountedsectional mold,of a pivoted support for said mold, a cam rotatablymounted and adapted to engage the support for the mold to operate thesame, and a track onthe periphery of said cam adapted to engage thesectional members of the mold to close the same; substantially asspecified.

4. In a glass-blowing machine, a sectional mold provided with armsextending beyond the pivotal point of the mold, and a rotating camprovided with a peripheral track adapted to engage said arms to operatethe sectionsof the mold; substantially as specified.

5. In a glass-blowing machine, a sectional mold provided with armsextending beyond the pivotal point of the mold, a rotating cam adaptedto engage said arms to operate the sections of the mold, and meanscarried by said arms to automatically open said mold; substantially asspecified.

6. In a glass-blowing machine, a sectional mold provided with armsextending beyond the pivotal point of the mold, a rotating memberadapted to engage said arms to operate the sections of the mold, meansto automatically open said mold, and a yielding member located upon oneof said arms; substantially as specified.

7 In a glass-blowing machine, a sectional mold provided with armsextending beyond the pivotal point of the mold, a rotating memberadapted to engage said arms to operate the sections of the mold, meansto automatically open said mold, and aspring-held member located uponone of said arms; substantially as specified.

8. In a glass-blowing machine, a sectional mold'provided with armsextending beyond the pivotal point of the mold, a rotating memberadapted to engage said arms to operate the sections of the mold, meansto automatically open said mold, a projection located in a recess formedin one of said arms, a spring bearing upon said projection, and anadjusting-nut'bearing upon said spring; substantially as specified.

9. In a glass-blowing machine, a sectional mold composed of pivotedmembers provided with laterally projecting arms, separable mold-sectionssecured to said pivoted sections,

and a base permanently located in relation to said movable members;substantially as specified.

10. In a glass-blowing machine, the combination With a support, of asectional mold pivoted thereto, and a base to said mold secured againstmovement in said support relative to said pivoted sections;substantially as specified.

11. In aglass-blowing machine, a mold-support, a pivoted mold securedthereto, a projection formed upon said support, and a rotating camadapted to bear upon said projection during a portion of its rotationsubstantially as specified.

12. In a glass-blowing machine, a supporting-lever provided with an openbearing, a pivoted mold secured to one end of said lever, and a rotatingcam adapted to bear against the opposite end of said lever;substantially as specified.

13. In a glass-blowing machine, a mold-opcrating cam provided with aflanged section extending along a portion ofits periphery and a recessedportion opposite said flanged section; substantially as specified.

1 L Ina glass-blowing machine, the combination with an air-pipe, of acap yieldingly connected thereto, a depending rod from said cap, ashifting rod for said cap, and a rotatin g cam adapted to actuate saidshifting rod; substantially as specified.

15. In a glass-blowing machine, the combination with an air-pipe, of acap yieldingly connected thereto, a depending rod from said cap, ashifting rod connected to said depending rod, a pivoted lever engagingat one end with said shifting rod, and a positively-driven cam adaptedto act upon the opposite end of said lever; substantially as specified.

16. In a glass-blowing machine, the combination with a blow-iron, ofoppositely-located friction-disks rotated in the same direction, gearsbelow said disks on the shafts thereof, and a positively-driven shaftcarrying driving means for said gears; substantially as specified.

17. In a glass-blowing machine, the combination with a blow-iron, ofoppositely-located friction-disks positively rotated in the samedirection and engaging said blow-iron, gears for driving said disks onthe shafts thereof, and a positively-rotated Worm-gear engaging each ofsaid driving-gears; substantially as specified.

18. In a glass-blowing machine, the combination With the frame thereof,of a support, a mold-supporting lever located thereon, a'sectional moldpivoted to the said lever, a powershaft supported in said frame, apositivelydriven cam located on said shaft, an air-pipe connection, ashifting rod and lever for operating said connection, and a cam locatedupon said power-shaft for operating said shifting lever; substantiallyas specified.

19. In a glass-blowing machine, the combis nation with the framethereof, of a support, a mold-supporting lever located thereon, asectional mold pivoted to the said lever, a powershaft supported in saidframe, a positivelydriven cam located on said shaft, an air-pipeconnection, ashifting rod and lever for operating said connection, a camlocated upon said power-shaft for operating said shifting lever, andmeans for rotating a blowdron; substantially as specified.

20. In a glass-blowing machine, the combination with the frame thereof,of a support, a mold-supporting lever located thereon, a sectional moldpivoted to the said lever, a powershaft supported in the said frame, apositively-driven cam located on said shaft, an air-pipe connection, ashifting rod and lever for operating said connection, a cam located uponsaid powershaft for operating said shifting lever, means for rotating ablow-iron, and guides for centering said blow-iron within a mold;substantially as specified.

'21. In a glass-blowing machine, the combination with the frame thereof,of a support, a mold-supporting lever located thereon, a sectional moldpivoted to said lever, a powershaft supported in the said frame,apositivelydriven cam located on said shaft, an air-pipe connection, ashifting rod and lever for operating said connection, a cam located uponsaid power-shaft for operating said shifting lever, means for rotating ablow-iron, guides for centering said blow-iron Within a mold, a gearlocated upon said power-shaft, a main driving-shaft provided with a gearengaging the gear on said power-shaft and with a bandpulley, and a beltextending from said pulley to the driving-shaft for the rotating meansacting upon the blow-irons; substantially as specified.

22. In a glass-blowing machine, the combination with a framework, of asupport located therein, a series of mold-supporting levers pivoted uponsaid support, a series of sectional molds pivoted upon said levers andprovided with projecting arms, a power-shaft, a series of operating-camsadapted to act upon the moldsupporting levers and upon the projectingarms from the molds, said levers being located upon said shaft inposition to suecessively perform the functions of raising, closing andpermitting the opening and depression of said molds; substantiallyasspecified.

23. In a glass-blowing machine, the combination with a framework, of asupport located therein, a series of mold-supporting levers pivoted uponsaid support, a series of sectional molds pivoted upon said levers andprovided with projecting arms, a power-shaft, a series of operating-camsadapted to act upon the mold-supporting levers and upon the projectingarms from the molds, said levers beinglocated upon said shaft inposition to successively perform the operation of raising, closing andpermitting the opening and depression of said molds, a series ofair-pipe connections, and means for successively moving. saidconnections in relation to a blowpipe and corresponding position of themolds substantially as specified.

24. In a glass-blowing machine, a powershaft, a cam located thereonprovided with a flanged section and a recessed portion terminating in ahooked end, a pivoted supporting-lever, a sectional mold secured to oneend thereof and provided With arms to engage the flanged portion of saidcam in its rotation, and a projection provided at the opposite end ofsaid lever and adapted to ride upon the periphery of said cam during itsrotation; substantially as specified.

25. In a glass-blowing machine, a powershaft, a cam located thereonprovided with a flanged section and a recessed portion terminating in ahooked end, a pivoted supporting-lever, a sectional mold secured to oneend thereof and provided with arms to engage the flanged portion of saidcam in its rotation, a projection provided at the opposite end of saidlever and adapted to ride upon the periphery of said cam during itsrotation, and means for automatically opening said mold-sections whenthe flange upon said cam has passed between the arms of the mold;substantially as specified.

26. In a glass-blowing machine, the combination with a blow-iron, of amold, an airmain and connections with said iron, a pressure-reducingvalve in communication with 100 said main, and means acting upon saidvalve to increase the air-pressure upon said iron; substantially asspecified.

27. In a glass-blowing machine, the combination with a blow-iron, of amold, an air- 105 main and connections With said iron, apressure-reducing valve in communication with said main, and anautomatically-operated striker for opening said valve; substantially asspecified.

28. In a glass-blowing machine, the combination with a blow-iron, of amold, an airmain and connections with said iron, a pressure-reducingvalve in communication with said main, an automatically-operated strikerI 15 for opening said valve, anda cam carried upon a power-shaft forengaging and opening said valve; substantially as specified.

29. In a glass-blowing machine, the combination witha tank, of apivotally-supported 12o sectional mold, unitary means for swinging saidmold upon its pivot and for closing the parts of said mold, means forautomatically adjusting an air-pipe connection in relation to ablow-iron, means for rotating said blow- 12 5 iron, and means forincreasing the air-pressure upon said blow-iron during the blowingoperation; substantially as specified.

30. In a glass-blowing machine, the combi nation with a support, of apower-shaft, sep- :30

arable molds pivot'aliy mounted adjacent the operation of saidair-pressure-reducing thereto, means carried. by said shaft forelevating said mold and for closing the members of thesame, means foradjusting an air-pipe connection, means carried by said powershaft foracting upon-said air-pipe-adj usting device, an air-pressure-redlicingdevice, and

means carried by said shaft for controlling defv'ioe; snbstantially asspecified. ,10 In testimony whereof I affix my signature in presence oftwo witnesses.

, HENRY G. SCHRADER. Witnesses:

J. W. FAUST, Jr., JNo. D. MoOALEB.

